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2001_03_28 SG A contribution– 14 Resolution process ENUM REGISTRANT CALLED PARTY SERVICE 1 SERVICE 2 CALLING PARTY DNS Server for e164.foo. Server for 2.3.7.1.e164.foo. * Server for 1.0.3.9.5.5.5.2.3.7.1.e164.foo. * Note: taking area code as the basis for distinguishing multiple Tier-1 registries for the sake of a worked example Step 1 Step 2